The bendpoint mode, where a link is presented in the manner of your choice

The rake mode, where a link is presented in rake bar form

All Modelio diagrams include the model expert feature, which provides real-time assistance when you are creating links in diagrams. If you try to create an authorized element (in this example, an association between two classes), the model expert highlights the concerned element in green, indicating that the creation operation you are attempting is allowed. If you try to create an unauthorized link (for example, an association between a package and a class), the model expert highlights the concerned element in red, indicating that the creation operation you are attempting is not allowed.